Gu, J.H.; Park, D.; Jung, K.-H.; Lee, B.C.; Han, Y.S. Effects of Ti3C2Tx MXene Addition to a Co Complex/Ionic Liquid-Based Electrolyte on the Photovoltaic Performance of Solar Cells. Molecules2024, 29, 1340.
Gu, J.H.; Park, D.; Jung, K.-H.; Lee, B.C.; Han, Y.S. Effects of Ti3C2Tx MXene Addition to a Co Complex/Ionic Liquid-Based Electrolyte on the Photovoltaic Performance of Solar Cells. Molecules 2024, 29, 1340.
Gu, J.H.; Park, D.; Jung, K.-H.; Lee, B.C.; Han, Y.S. Effects of Ti3C2Tx MXene Addition to a Co Complex/Ionic Liquid-Based Electrolyte on the Photovoltaic Performance of Solar Cells. Molecules2024, 29, 1340.
Gu, J.H.; Park, D.; Jung, K.-H.; Lee, B.C.; Han, Y.S. Effects of Ti3C2Tx MXene Addition to a Co Complex/Ionic Liquid-Based Electrolyte on the Photovoltaic Performance of Solar Cells. Molecules 2024, 29, 1340.
Abstract
Redox mediators comprising I–, Co3+, and Ti3C2Tx MXene were applied to dye-sensitized solar cells (DSCs). In the as-prepared DSCs (I-DSCs), wherein hole conduction occurred via the redox reaction of I−/I3− ions, the power conversion efficiency (PCE) was not altered by the addition of Ti3C2Tx MXene. The I-DSCs were exposed to light to produce Co2+/Co3+-based cells (Co-DSCs), wherein the holes were transferred via the redox reaction of Co2+/Co3+ ions. A PCE of 9.01% was achieved in a Co-DSC with Ti3C2Tx MXene (Ti3C2Tx-Co-DSC), which indicated an improvement from the PCE of a bare Co-DSC without Ti3C2Tx MXene (7.27%). It was also found that the presence of Ti3C2Tx MXene in the redox mediator increased the hole collection, dye regeneration, and electron injection efficiencies of the Ti3C2Tx-Co-DSC, leading to an improvement in both the short-circuit current and the PCE when compared with those of the bare Co-DSC without MXene.
Keywords
dye-sensitized solar cell; redox mediator; Ti3C2Tx MXene; hole conduction
Subject
Chemistry and Materials Science, Electrochemistry
Copyright:
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